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Diffstat (limited to 'freebsd/contrib/libpcap/diag-control.h')
| -rw-r--r-- | freebsd/contrib/libpcap/diag-control.h | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/freebsd/contrib/libpcap/diag-control.h b/freebsd/contrib/libpcap/diag-control.h new file mode 100644 index 00000000..12770361 --- /dev/null +++ b/freebsd/contrib/libpcap/diag-control.h @@ -0,0 +1,215 @@ +/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ +/* + * Copyright (c) 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _diag_control_h +#define _diag_control_h + +#include "pcap/compiler-tests.h" + +#ifndef _MSC_VER + /* + * Clang and GCC both support this way of putting pragmas into #defines. + * We don't use it unless we have a compiler that supports it; the + * warning-suppressing pragmas differ between Clang and GCC, so we test + * for both of those separately. + */ + #define PCAP_DO_PRAGMA(x) _Pragma (#x) +#endif + +/* + * Suppress Flex warnings. + */ +#if defined(_MSC_VER) + /* + * This is Microsoft Visual Studio; we can use __pragma(warning(disable:XXXX)) + * and __pragma(warning(push/pop)). + * + * Suppress signed-vs-unsigned comparison, narrowing, and unreachable + * code warnings. + */ + #define DIAG_OFF_FLEX \ + __pragma(warning(push)) \ + __pragma(warning(disable:4127)) \ + __pragma(warning(disable:4242)) \ + __pragma(warning(disable:4244)) \ + __pragma(warning(disable:4702)) + #define DIAG_ON_FLEX __pragma(warning(pop)) +#elif PCAP_IS_AT_LEAST_CLANG_VERSION(2,8) + /* + * This is Clang 2.8 or later; we can use "clang diagnostic + * ignored -Wxxx" and "clang diagnostic push/pop". + * + * Suppress -Wdocumentation warnings; GCC doesn't support -Wdocumentation, + * at least according to the GCC 7.3 documentation. Apparently, Flex + * generates code that upsets at least some versions of Clang's + * -Wdocumentation. + */ + #define DIAG_OFF_FLEX \ + PCAP_DO_PRAGMA(clang diagnostic push) \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wsign-compare") \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wdocumentation") \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wmissing-noreturn") \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunused-parameter") \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunreachable-code") + #define DIAG_ON_FLEX \ + PCAP_DO_PRAGMA(clang diagnostic pop) +#elif PCAP_IS_AT_LEAST_GNUC_VERSION(4,6) + /* + * This is GCC 4.6 or later, or a compiler claiming to be that. + * We can use "GCC diagnostic ignored -Wxxx" (introduced in 4.2) + * and "GCC diagnostic push/pop" (introduced in 4.6). + */ + #define DIAG_OFF_FLEX \ + PCAP_DO_PRAGMA(GCC diagnostic push) \ + PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wsign-compare") \ + PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunused-parameter") \ + PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunreachable-code") + #define DIAG_ON_FLEX \ + PCAP_DO_PRAGMA(GCC diagnostic pop) +#else + /* + * Neither Visual Studio, nor Clang 2.8 or later, nor GCC 4.6 or later + * or a compiler claiming to be that; there's nothing we know of that + * we can do. + */ + #define DIAG_OFF_FLEX + #define DIAG_ON_FLEX +#endif + +#ifdef YYBYACC + /* + * Berkeley YACC. + * + * It generates a global declaration of yylval, or the appropriately + * prefixed version of yylval, in grammar.h, *even though it's been + * told to generate a pure parser, meaning it doesn't have any global + * variables*. Bison doesn't do this. + * + * That causes a warning due to the local declaration in the parser + * shadowing the global declaration. + * + * So, if the compiler warns about that, we turn off -Wshadow warnings. + */ + #if defined(_MSC_VER) + /* + * This is Microsoft Visual Studio; we can use + * __pragma(warning(disable:XXXX)) and __pragma(warning(push/pop)). + * + * Suppress unreachable code warnings. + */ + #define DIAG_OFF_BISON_BYACC \ + __pragma(warning(push)) \ + __pragma(warning(disable:4702)) + #define DIAG_ON_BISON_BYACC __pragma(warning(pop)) + #elif PCAP_IS_AT_LEAST_CLANG_VERSION(2,8) + /* + * This is Clang 2.8 or later; we can use "clang diagnostic + * ignored -Wxxx" and "clang diagnostic push/pop". + */ + #define DIAG_OFF_BISON_BYACC \ + PCAP_DO_PRAGMA(clang diagnostic push) \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wshadow") \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunreachable-code") + #define DIAG_ON_BISON_BYACC \ + PCAP_DO_PRAGMA(clang diagnostic pop) + #elif PCAP_IS_AT_LEAST_GNUC_VERSION(4,6) + /* + * This is GCC 4.6 or later, or a compiler claiming to be that. + * We can use "GCC diagnostic ignored -Wxxx" (introduced in 4.2) + * and "GCC diagnostic push/pop" (introduced in 4.6). + */ + #define DIAG_OFF_BISON_BYACC \ + PCAP_DO_PRAGMA(GCC diagnostic push) \ + PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wshadow") \ + PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunreachable-code") + #define DIAG_ON_BISON_BYACC \ + PCAP_DO_PRAGMA(GCC diagnostic pop) + #else + /* + * Neither Clang 2.8 or later nor GCC 4.6 or later or a compiler + * claiming to be that; there's nothing we know of that we can do. + */ + #define DIAG_OFF_BISON_BYACC + #define DIAG_ON_BISON_BYACC + #endif +#else + /* + * Bison. + */ + #if defined(_MSC_VER) + /* + * This is Microsoft Visual Studio; we can use + * __pragma(warning(disable:XXXX)) and __pragma(warning(push/pop)). + * + * Suppress some /Wall warnings. + */ + #define DIAG_OFF_BISON_BYACC \ + __pragma(warning(push)) \ + __pragma(warning(disable:4127)) \ + __pragma(warning(disable:4242)) \ + __pragma(warning(disable:4244)) \ + __pragma(warning(disable:4702)) + #define DIAG_ON_BISON_BYACC __pragma(warning(pop)) + #elif PCAP_IS_AT_LEAST_CLANG_VERSION(2,8) + /* + * This is Clang 2.8 or later; we can use "clang diagnostic + * ignored -Wxxx" and "clang diagnostic push/pop". + */ + #define DIAG_OFF_BISON_BYACC \ + PCAP_DO_PRAGMA(clang diagnostic push) \ + PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunreachable-code") + #define DIAG_ON_BISON_BYACC \ + PCAP_DO_PRAGMA(clang diagnostic pop) + #elif PCAP_IS_AT_LEAST_GNUC_VERSION(4,6) + /* + * This is GCC 4.6 or later, or a compiler claiming to be that. + * We can use "GCC diagnostic ignored -Wxxx" (introduced in 4.2) + * and "GCC diagnostic push/pop" (introduced in 4.6). + */ + #define DIAG_OFF_BISON_BYACC \ + PCAP_DO_PRAGMA(GCC diagnostic push) \ + PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunreachable-code") + #define DIAG_ON_BISON_BYACC \ + PCAP_DO_PRAGMA(GCC diagnostic pop) + #else + /* + * Neither Clang 2.8 or later nor GCC 4.6 or later or a compiler + * claiming to be that; there's nothing we know of that we can do. + */ + #define DIAG_OFF_BISON_BYACC + #define DIAG_ON_BISON_BYACC + #endif +#endif + +#endif /* _diag_control_h */ |